生态学杂志2025，Vol.44Issue(12)：3883-3890,8.DOI:10.13292/j.1000-4890.202512.032
昼夜增温背景下入侵植物对土壤氮转化的影响及其与氨氧化微生物的相关性
Effects of invasive plants on soil nitrogen transformation under the background of day and night warming and its correlation with ammonia-oxidizers
摘要
Abstract
Global warming shows a diurnal asymmetrical trend.Invasive plant species have significant impacts on soil nitrogen(N)transformation.Ammonia-oxidizing bacteria(AOB)and archaea(AOA)are the key microorga-nisms regulating N transformation.However,the effects of invasive plants on soil N transformation under day-and night-warming and its relationship with ammonia-oxidizing microorganisms remain unclear.Two invasive alien plants(Bidens alba and Praxelis clematidea)and a native plant(Emilia sonchifolia)were selected.A common garden ex-periment with three warming treatments(day warming,night warming and whole day warming)and a control(no warming)was set up.We investigated the effects of different plants on soil N transformation under day-and night-warming and the relationship between soil N content and ammonia-oxidizing microorganisms.The results showed that day warming increased the soil NH4+of B.alba and the soil NO3-content of E.sonchifolia,while night warming in-creased soil NO3-content of B.alba but decreased soil NH4+content of P.clematidea.Those results indicate that different warming had different effects on soil nitrogen content,which depended on plant species.Day-and night-warming increased the abundance of AOB of P.clematidea,while soil AOB abundance of B.alba was only in-creased under night warming,and warming had no significant effects on abundance of soil AOA.There was a signi-ficant positive correlation between the abundance of AOB and NO3-of the two invasive species,indicating that the promotion effect of invasive plants on soil NO3-content was mainly related to the increases of AOB abundance under warming.This study is helpful for understanding the effects of day-and night-warming on soil N transformation with plant invasion,and the role of AOA and AOB in soil N transformation.关键词
入侵植物/增温/氮转化/氨氧化微生物Key words
invasive plant/warming/nitrogen transformation/ammonia-oxidizer引用本文复制引用
陈宝明,苏哲洋,方钰淇..昼夜增温背景下入侵植物对土壤氮转化的影响及其与氨氧化微生物的相关性[J].生态学杂志,2025,44(12):3883-3890,8.基金项目
国家自然科学基金项目(31670479)和广东省自然科学基金项目(2016A030313287)资助. （31670479）
